Simulation methods for Fluidity of fresh concrete.

Abstract

In the present paper, three types of analytical methods for simulating the flowing behavior of fresh concrete, i.e., viscoplastic finite element method (VFEM), viscoplastic suspension element method (VSEM) and viscoplastic divided space element method (VDEM), are proposed, and some analytical results are shown. The deformation of fresh concrete in various consistency and rheological tests, such as slump test, flow test, VB test, vibrating slump test, vibrating consistency test and cylindrical rotation viscometer, and under various conditions of concreting works, such as casting, consolidating and pumping in pipe, is obtained by these simulation methods. The adequacy of the analytical methods is examined by comparison with experimental results, and the relationship between workability and rheological constants of fresh concrete is discussed.